Caithness Map :: Links to Site Map Paying too much for broadband? Move to PlusNet broadband and save£££s. Free setup now available - terms apply. PlusNet broadband.  

 

First Cut Out Of Reactor Pond Wall At Dounreay

19th February 2017

Photograph of First Cut Out Of Reactor Pond Wall At Dounreay

The first block of concrete has been removed from the structure of one of Dounreay's cooling ponds - representing a major first step in demolishing the redundant giant chamber.

The pond is one of two concrete pits, six metres deep, which was used to store spent fuel from the Dounreay Fast Reactor (DFR). When in operation they resembled deep swimming pools, containing around 500m³ of water, providing shielding for workers from radiation emitted from spent fuel. They have now been drained of water and sludge, while redundant equipment has been removed.

There are around 180 blocks of concrete, individually weighing around one tonne, to be removed from each pond and packaged as waste.

Suzanne Griffiths, Project Manager, said: "Decommissioning of the ponds is technically challenging. While each block is only around 1m², it is extremely heavy and the process of cutting it is complex. The team has worked exceptionally well together and applied lateral thinking, deploying new techniques to allow the concrete liner to be removed in preparation for final demolition."

The work in DFR is one the biggest decommissioning tasks in the UK today. It is one of the highest hazards within the Nuclear Decommissioning Authority's estate and the safe removal of associated plants and facilities is crucial to getting Dounreay to its interim end state.

 

Related Businesses

 

Related Articles

Up To 200 Jobs To Go At DounreayThumbnail for article : Up To 200 Jobs To Go At Dounreay
The clean-up of the nuclear estate is a key priority for both the Scottish and United Kingdom governments.   Dounreay's decommissioning is well established with the site due to reach an interim end state by the early 2030s.  
Dounreay's High Street MakeoverThumbnail for article : Dounreay's High Street Makeover
A major upgrade and expansion of Dounreay's Thurso town centre office has been completed.   David Flear, Chair of Dounreay Stakeholder Group, officially reopened the building which sits at the entrance to the high street and has been the site's public information office for almost a decade.  
Doors Open At Unique Nuclear ArchiveThumbnail for article : Doors Open At Unique Nuclear Archive
A unique new archive, funded by the Nuclear Decommissioning Authority, has opened its doors to the public for the first time, bringing together historical nuclear records from all over the UK.   Speaking today at the Nucleus (Nuclear and Caithness Archive) in Wick, NDA chairman Stephen Henwood, said:Today we see a new chapter in the important role Caithness has played in the UK's nuclear history.  
More Than 30,000 Bricks Removed From Redundant PlantThumbnail for article : More Than 30,000 Bricks Removed From Redundant Plant
More than 30,000 bricks have been removed from three pits within a redundant facility as part of a project to decommission a former effluent treatment plant.   A scaffold platform has been constructed to allow operators, wearing full airline suits, access to remove the bricks using small electrically operated hand tools.  
Waste contract signals Dounreay's community commitmentThumbnail for article : Waste contract signals Dounreay's community commitment
Amec Foster Wheeluker has been awarded a contract to design and build a new effluent treatment plant at Dounreay.   The agreement signals a landmark move for the Caithness site as the first to incorporate socio-economic commitments following the introduction of a new procurement policy earlier this year.  
Japanese Ambassador visits DounreayThumbnail for article : Japanese Ambassador visits Dounreay
His Excellency, Mr Koji Tsuruoka, Ambassador of Japan to the United Kingdom, Mr Yosuki Ishigami from the Economic Section of the Japanese Embassy and Mr Daisuke Matsunaga, Consul General of Japan in Edinburgh visited Dounreay during a two-day visit to the north of Scotland as a guest of Dr Paul Monaghan MP.   At Dounreay the group toured the Prototype Fast Reactor (PFR), including the reactor hall.  
10 New Apprentices Start At DounreayThumbnail for article : 10 New Apprentices Start At Dounreay
Dounreay has said "you're hired" to ten local newcomers who have started their careers at Dounreay this week.  This makes it the 61st consecutive year that apprentices have joined the site.  
New camera provides clear images of bowels of reactorThumbnail for article : New camera provides clear images of bowels of reactor
An off the shelf CCTV camera is providing crystal clear images from the depths of Dounreay's Prototype Fast Reactor (PFR).   Fifty years on from the construction of PFR, the reactor decommissioning team is viewing footage that will enable it to pull apart the innards of the second and last fast reactor to be built in the UK.  
Dounreay meets target for liquid hazard reductionThumbnail for article : Dounreay meets target for liquid hazard reduction
The last of the higher activity liquid waste produced during Dounreay Fast Reactor (DFR) fuel reprocessing has been made safe for future generations.  It is an important milestone in the immobilisation of the historic liquid waste, known as raffinate, created from reprocessing undertaken during the operation of Dounreay's three reactors.  
Graduates Start At DounreayThumbnail for article : Graduates Start At Dounreay
Ten new graduates started their careers at Dounreay this week as the company's graduate development programme entered its second year.   Applications to the scheme soared after the success of last year's first ever graduate intake, with more than 200 applications received.  

[Printer Friendly Version]